Cage for roller-bearings.



C. S. LOCKWOOD.

CAGE FOR ROLLER BEARINGS.

APPLICATION FILED MAY I2. 1912.

1 338,309. Patented Aug. 28, 1917.

' double function of holdin UNITED STAQES PATENT OFFICE.

CHARLES S. LOCKWOOD, 0F NEWARK, NEW JERSEY, ASSIGNO R TO HYAT'I ROLLER BEARING DIVISION, UNITED MOTORS CORPORATION, OF HARRISON, NEW JER- SEY, A CORPORATION OF NEW YORK.

GAGE FOB ROLLER-BEARINGS.

Specification of Letters Patent.

Patented Aug. 28, 1917.

Application filed May 12, 1917. Serial No. 168,087.

To all whom it may concern Be it known that I, CHARLES S. Loonwooo, a citizen of the United States, residing at 496 Clinton avenue, Newark, county of Essex, and State of New Jersey, have invented certain new and useful Improvements in Cages for Roller-Bearings, fully described and represented in the following specification and the accompanying drawings, forming a part of the same.

This invention relates to a cage of special construction for guiding anti-friction rolls employed in a roller bearing, and the invention comprises a particular construction of curved cheelcpieces which guide the rolls, by which they are enabled to perform the the rolls in place, and also connecting the heads of the cage together.

Such curved guides present a large bearing-surface to the rolls thus reducing the wear between the guides and rolls, and the construction furnishes a convenient means of assembling the parts together so that the roll is inclosed between two such curved guides by a very simple and rigid construction. Such curved guides hold the rolls perma neatly in-the cage so as to form a unitary structure, which can be readily handled and transported without derangement.

The entire cage is made of sheetanetal which has the double advantage of reducing the weight while it also reduces the labor to form the guides, as they may be stamped from sheet-metal into the desired curved form. r v

The guides can be adapted to perform this double function by two constructions, first, by transversely grooving the ends of the guides and fitting such ends into curved mortises extending part way through the heads of the cage, and crowding the metal of the heads, adjacent to the mortises, into the coves formed transversely in the ends of t e guides. By such construction, the connection of the guides to the heads does not show upon the outer sides of the heads.

Second, by fitting the separate tenons upon the ends of the guides into mortises extend ing all the way through the heads and pressing the metal of the heads ad acent to the outer ends of the mortises into grooves upon the said tenons. This avoids riveting the tenons.

Where the curved guides are secured in the heads by locking them in curved mortlses, any wear of the heads adjacent to the ends of the rolls would diminish thedepth of the mortises and weaken the connection of the guides therewith; and to prevent any such wear, hardened washers may be inserted between the ends of the rolls and the heads, and held stationary by tie-bars in sorted through the rolls and washers, or by the ends of the guides.

In assembling the rolls in the cage, the curved guides are first secured to one of the heads by either of the means referred to above, the rolls are inserted between the pairs of guides, and the other head is then applied to the guides and secured thereto as already described.

By this means, the guides themselves form the connection between the two heads, thus forming a complete'cage without any other connection.

W'here hollow rolls are used, the bars may be inserted through the rolls and tenons upon their ends extended through mortises in the heads, and the metal around the mortises pressed into grooves in the said tenons to lock the tie-bars in place.

The invention will be understood by reference to the annexed drawing, in which Figure 1 is an. edge View of a cage with three of the guides removed to show the constructive features; Fig. 2 is a transverse section of the cage and rolls with six of the guides and three of the rolls omitted to show the curved mortises in one of the heads; Fig. 3 is a side view of one of the curved guides with curved tenons extending across its enthe breadth; Fig. 4 is a longitudinal section on line 4-4 in Fig. 3; Fig. 5 is an enlarged longitudinal section of a guide showing the connection of such a curved tenon with one of the heads; Fig. 6 is a front view, and Fig. 7 an edge view of a perforated washer for insertion between the roll and guide-head.

Fig. 8 is a modification of the same construction.

Fig. '9 is a section like Fi 5 with the tenon extended wholly throng the head.

Fig. 10 is a section showing a washer held against the head by a tie-bar. Fig. 11 is an end view, Fig. 12 an inside view, and Fi 18 a longitudinal section of a curved gui 0 1t shows a portion of the head with mortises to fit such single tenons; Fig. 15 is an end view, Fi 16 an inside view, and Fig. 17 a longitudinal section of a guide with double tenons upon each end; Fig. 18 shows a portion of a head with mortises to fit such double tenons; Fig. 19 is a side view, and Fig. 20 an end view of a tie-bar for holding the washers in place.

In Figs. 1 and 2, the heads a are shown formed with shallow curved niortises 6 upon their across the head from its inner to its outer edge. Curved guides c are shown in Fig. 3 formed with a groove 0 extended across each end upon its convex outer side, such roove having a width equal to the depth of the mortise, as shown in Figs. 1 and 5.

Fig. 5 shows the means of securing the tenon in the mortise, by forcing the metal of the head inwardly adjacent to the convex side of the guide, thus leaving a recess (Z adjacent to the outer side of the guide, as shown in Figs. and 5.

Such forcing or depressing of the metal may be effected with suitable straight tools in securing the guides to one of the heads, but the application of the second head to the outer ends of the guides prevent the use of such a straight tool and the offset tool f, shown in Fig. 1, is required to operate upon the inner .lde of the head. over the entire width of such head adjacert to any of the niortises. Thetool is shown with a shank to operate it, the outer side of the head being supported upon a suitable table during such operation.

The curvature of the guide and of the mortise in which it is fitted, causes the pressing of the metal into the groove 0 to lock the guide very rigidly to the head.

Figs. 11 to 18 show constructions with tenons extended all the way through the head.

Narrow tenons are necessarily used, as a mortise for a tenon extei'iding the whole breadth of the guide and would cut the head in two.

Figs. 11 and 12 show a narrow tenon upon each end of the guide, the tenon having length suitable to extend all the way through Inortises 9 formed in the head, as shown in Fig 14.

Such tenons would be grooved or beveled inwardly upon one side, as shown in Figs. 13 and 9, and would be lo ked in the head by pressing the metal upon the outer side of the head, as shown at d in Fig". 9.

Figs. 15 and 16 show guides with double tenons u on each end, and Fig. 18 shows a portion 0 the head with double morittses g for each of such guides, the tnons being grooved upon one side, as shown in Fig. 17,

inner sides extending all the wayand secured in place by the means described in Fig. 19.

A washer h is shown in Fig. 8 with a notch z in each end, proportioned to coincide with the mortises g in Fig. 1-1 when laid upon the inner side of the head a, so that they may be clamped between the ends of the aides and the head a. when the tenons 0 are ocked in the head. In such case, the tenons are made long enough to extend through the notches and through the head flush with 'ts outer side to be secured in the head, as shown in Fig. 9.

1Vhere the metal is depressed upon the inner side of the head, the beveling or grooving of the tenons must necessarily be on the convex side of the guide which affords access of the tool to the heads adjacent to the convex side of each guide after the rolls are in place; but where the tenons extend through the head, as with the construction of Figs. 9, 14 and 18, the tenon may he grooved transversely upon either the inner or outer side of the guide, as such sides are equally accessible upon the outer side of the head.

The antiiriction washers may be, held stationary at both ends of each roll by making the washers h circular, as shown in Figs. 6 and 10, and inserting a tie-rod 1' through the rolls with a grooved tenon k to pass entirely through the head, and a. shoulder Z next the head to clamp th vasher h thereto.

In locking suchv a tenon in the head, a hollow circular tool is used to depress the metal around the end of the circular tenon, thus forming a circular recess (1 the operation pressing the head strongly toward the washer which rests upon the shoulder Z, and thus pinches the washer tightly in place as desired. All the parts of the cage are readily made of thick sl1eet-1nctal by stamping operations, and the connection of the parts together is rapidly etl'ected by suitable tools, the resulting cage being rigid in construction and very durable in operation.

Having thus set forth the nature of the invention what is claimed herein is:

1. A cag for a roller bearing having annular heads connected by curved guides for the rolls, the ends of said guides being grooved transversely, curved mortises adapted to receive the ends of the said guides, and the metal of the heads adjacent the ends of the guides being pressed in at the sides of the mortises and forced into the said grooves.

2. A cage for a roller bearing having heads provided with two oppositely curved Inortises for each roll extended part way through the said heads, transversely curved guides having transverse grooves upon their and the heads having outer convex sides at the ends, the said ends being fitted into the mortises and the metal of the body pressed inward around the outer sides of the guides to look their ends into the mortises.

3. A cage for a roller bearing having heads provided upon the inner sides with two oppositely curved mortises for each roll extended part way through the said heads, transversely grooved curved guides fitted to the curved mortises, rolls fitted between the said guides and hardened washers fixed between the roll-ends and the heads to protect' the heads, and the metal of the heads around the outer sides of the guides being pressed inwardly to force the said metal against the grooved sides of the guides.

4. A cage for a roller bearing having heads provided with two oppositely curved mortises for each roll extended part waythrough the said heads with a perforation between said mortises, transversely curved guides having transverse grooves upon their outer convex sides at the ends, the said ends being fitted into the mortises and the metal of the heads pressed inward around the outer sides of the guides to lock the ends of the same into the mortises, hollow rolls fitted within the said guides with a hardened washer at each end having a perforation in its center, and tie-bars having transversely grooved tenons upon the ends inserted through the rolls with the tenons extended through the perforations of the washers and of the heads, and the metal of the heads around the ends of the tenons being pressed inwardly to engage the grooves of the tenons.

In testimony whereof I have hereunto set my hand.

CHARLES S. LOOKWOOT). 

